Purchased this product to aid in the cleaning process of customers devices brought in to be brought back to health. As far as how good the cleaner itself is, I can not say. The tube the spray nozzle sits on goes down inside the can when you push the nozzle to spray the cleaner. Two times, two separate items, same outcome. After the 1st can did this we called and a replacement was sent to us, 2 days later when the replacement arrived, the very same thing happened as the 1st can.